How to troubleshoot a Honda Civic cooling fan?
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Why is my Honda AC / heat not working?
It retained its class-leading handling as it, along with the fourth and fifth generations, had front double wishbone suspension, the advanced independent suspension inspired by Honda’s racing research. The ac/heat worked great until a couple days ago. I noticed the fan was not blowing any air through the vents.
Why is my AC not blowing air through the vents?
The ac/heat worked great until a couple days ago. I noticed the fan was not blowing any air through the vents. Then all of a sudden it started blowing full blast, while the recirc, ac, rear defrost button lights all came on and were flashing…then it all turned off.
Why does my AC fan keep turning off?
First off some background info to get you in the right mode. The speed control chooses the speed of the motor by changing the resistance in series with the DC fan motor. These resistors are all attached to one board with shovel plug attachments and the whole assembly is stuck in the air vent to keel them cool.
Why is the a / C switch on my Honda Civic not working?
Without knowing A/C system pressure this is a guess as to whether the switch is good or bad. As an alternative you can bypass the switch temporarily. The A/C pressure switch receives a signal from the Heater Control Panel (Connector A pin 4 @ heater control panel).
Why does my car have no air in the vents?
Step 3 – A fan blower motor is controlled by either a switch in the passenger compartment or by a computer. If this fan motor is starting to fail it will cause the fan motor to run at a lower speed resulting in low air flow. To test this condition an amp meter is needed, connect the meter lead to the power wire of the fan motor.
Where does the a / C signal come from on a Honda Civic?
And the Heater Control Panel receives a signal from the A/C on/off switch (Connector B pin 15 @ heater control panel, this looks like it should be 12v or 5v one of the two…). And it looks like the only other input into the Heater Control panel is from the Evaporator Temperature Sensor.
How do I stop no air from dashboard vents?
This door is controlled by a thumb wheel that when activated will open and close the vent air flow door. Work the thumb wheel from one side to the other while checking the airflow. The flow should stop and start again, if the thumb wheel does not make a difference the problem is somewhere else.
Where is the cooling switch on a Honda Accord?
The cooling fan switch in your Accord is located on the thermostat housing (see Figure 2 and 4). It controls both fans only when the key is in the “ON” position, but the engine is not running. Check if the cooling fan switch is working properly, and that there is no sign of wear or faultiness.
What should I do if my Honda radiator fan is not turned on?
Find a non critical one like the Horn or headlight relay and swap it out with the fan relay. If that works it is your relay and then you just buy one that is the same. With your engine running and you have your interior fan lever/switch on does it blow air on all positions?
Why are my cooling fans running at all times?
3. Cooling fans stay on at all times. If the cooling fans are staying on at all times, this is another (less common) symptom of a possible problem with the cooling fan relay. If the relay shorts internally, it may cause power to be permanently switched on, which will cause the fans to run at all times.
Why are the cooling fans not working on my car?
1. Engine running hot 2. Cooling fans do not function 3. Cooling fans stay on at all times Average rating from 129,472 customers who received a Vehicle Engine Cooling Inspection. Most modern vehicles use electric cooling fans to help pull air through the radiator so that it can keep the engine cool.
When to turn on the cooling fan relay?
The relay will usually be activated once it is detected that the vehicle’s temperature approaches excessively high temperatures. Usually a faulty cooling fan relay will produce a few symptoms that can alert the driver that service may be required.
What’s the PSI of the air conditioner in a Honda Civic?
So, back to the hoses. This time, I revved the car up to about 1,500 to 2,000 RPM (since the Civic seems to idle at around 500 rpm). Sure enough, he said that the low pressure was being sucked down to about 20 PSI and the high-pressure was kicking way up again past 400 PSI.
Why is my car air conditioner cycling on and off?
I turned the A/C off and stopped putting R-134a into it becuase the compressor cycling was almost causing the car to die from the load it was putting on the engine. Onto Google I went. Everywhere I turned, people said that if the compressor was cycling on and off quickly, that meant the compressor was low on freon.
Where is the switch for the radiator fan?
The radiator fan switch is located on the thermostat housing and if jumped should operate the fans. no, when the AC is on they both seem to work , even when the temp goes up, or if you turn off the AC , then the fan stops turning. I found underneath the Thermostat housing a single wire going into the engine block, is this the sensor switch.
Is the radiator fan working when the AC is on?
no, when the AC is on they both seem to work , even when the temp goes up, or if you turn off the AC , then the fan stops turning. I found underneath the Thermostat housing a single wire going into the engine block, is this the sensor switch. I have no picture to tell if I’m on the right trail.
How does the radiator work on a Honda Civic?
Honda radiator is a critical component of the cooling system, transferring heat from the coolant to the air flow generated by the fan. The radiator removes excess heat from the engine and keeps a stable, safe temperature for the engine to run properly. Item has been added to your cart! This part contains hazardous material.
Why is my Honda Civic radiator fan not working?
I am using 2004 honda civic 2004 car, radiator fan and cooler fan not working, ac also not working, i checked fuses those are ok, and fan conditions ok ( checked directly from battery , i did short cooling sensor connector pins but no results where is problem how can i get results ? ple help me on this issue Answered!
What does the thermo switch on a Honda radiator do?
If the fan switch relay is giving off the appropriate readings and is in working condition, move on to the next step. The thermo switch (also called the cooling fan switch) sends a signal to the cooling fan, so the fan turns on if the coolant gets too hot.
How can I make my Honda radiator fan work?
Place one end of a fused jumper wire on one of the relay’s control terminals. Place the other end of the fused jumper wire on the car’s positive (red) terminal of the battery. Then, touch one end of a regular jumper wire to the other relay’s control terminal. Ground the other end of the regular jumper wire to the vehicle.